Furnace.



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No. 66|,75L'

(No Model.)

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Ullhllllllllllllllllllllllll No. 66|,75I. Patened Nov. I3, |900. J. C. & D. WIGERT.

FURNACE.

(Application med Feb. 13, 1900.).

. 2 Sheets--Shee 2.

d' Mf- NITED STATES PATENT OFFICE.

JOSEPH C. WIGERT AND DAVID TIGER/ll, OF BUSHNELL, ILLINOIS.

FU RNACE.

SPECIFICATION forming part of Letters Patent No. 661,751, dated November 13, 1900.

Application filed February 13, 1900. Serial N0. 5,039. (N0 model.)

T0 all whom it may concern:

Be it known that we, JOSEPH C. WIGERT and DAVID WIGER'I, citizens of the United States, residing at Bushnell, in the county of McDonough and State of Illinois, have invented a new and useful Furnace, of which the following is a specification.A

This invention relates to furnaces in gen-` eral, and more particularly to 4the class of heatingfurnaces employed in systems of steam and hot-water heating, the object of the invention being to provide a structure comprising front and rear hollow portions adapted to receive water and to combine with these portions an arrangement and construction of grate-bars and crown-sheet, with their connectingpipes,as will insurea most efficient heating with a minimum of fuel, thus not only saving the cost of an excess of fuel, but also precluding the necessity of frequent attention.

In the drawings forming a portion of this specification, and in which similar numeralsk of reference designate like and corresponding parts in the several views, Figure l is a front elevation of a furnace constructed in accordance with the present invention( Fig. 2 is a vertical transverse section of the furnace.,.Fig. 3 is a section on line 3 3 of Fig. 2. Fig. 4. is a horizontal transverse section of the complete furnace.

Referring now to the drawings, the present invention comprises a water-frontincluding columns 5 and 6, having a connected water-section 7 at their ends, said columns be- .ing also connected at a point above their lower ends by a second water-section 8, the space between the water-sections 7 and 8 permitting the supply of fuel to the furnace, while the space below the section 8 opens into the ash-p it.

The water-back consists of a plurality of rectangular columns 9, the upper ends of which are enlarged transversely, as indicated in dotted lines in Fig. 2, and the upper ends of these several columns are connected by means of an interspace 40L to permit a free flow of water from one to another. The Water-columns have the inner faces of their lower ends beveled, asshown at 12, and these lower portions are also connected by means of an interspace 13.

Two mutually-parallel water-sections ltand 15 are connected at their front ends with the water-section 8 through the medium of the nipples or pipe 16, and at their rear ends these water-sections have inwardly-directed portions l7,which communicate with the outermost columns 9, as illustrated in Fig. 4.

A water -crown 20 extends transversely throughout the width of the furnace and reaches from the water-section 7 to the upper ends of the columns 9. The forward end of the water-crown is connected with the column 7 by a single nipple, (shown at 73,) While the sides of the water-crown, at the rear ends thereof, are connected with the upper ends of the outermost columns 9 by curved nipples 9a. (Shown in Fig. 2.) The grate of the present invention comprises a number of pipes oppositely disposed in pairs, these gratepipes being in the form of return-tubes. One series of return-tubes 2l is mounted upon the water-section l5, each of these tubes being connected through the upper face of the water-section and extending upwardly a short distance,`then inwardly for substan tially onehalf the width of the lire-pot, and then upwardly and rearwardly to lie above the inwardly-directed portion, after which the tube is bent upwardly and opens into the watercrown 2O at a point above the water-section 15. Similar tubes 22 are mounted upon the watersection 14 apd communicate with the watercrown 20 thereabove, these series of tubes forming a complete grate, the upper surface of which lis in a common horizontal plane, the grate thus comprising what is in effect two horizontal layers of pipes, so that the wa ter in its circulation moves under the lire in one direction for substantially one-half .its width and is then returned.

As illustrated in Figs. 2 and 4., the mutually-adjacent ends of the series of pipes are separated by slight interspaces, so that when expanded under the iniinence of the heat in ssY IOO

umns 9 to lie iush with the inner faces of" the latter., Openings 27 are formed in thev closed, and the draft th rough the furnace may thus be regulated.

In practice the structure above described may be inclosed in a metallic casing 29 or may be set in brick or otherwise inclosed, the feedopeningl 30 between the sections 7.and 8 having acommunicating door 3l, while the ashpit below the grate has a lcommunicating door 32, as illustrated. Between the feeddoor 3l and the ash-door 32 and above the water-.section 8 is a draft-door 31a. The lower ends of the columns 9 are unconnected below the grate, excepting by the pipes 13, and thus if the darnpers 20 be closed and the draftdoor 31"L be opened there will be a downdraft through the 'dre-box to the ash-pit and thence upwardly between the water-,columns 9 and to the chimney.

It will be noted from the foregoingldescription that the usual water-,section directly-between -the feed-door andl the draft-.door is expansion and contraction of this section as usually employed. Also each grate-.bar--may be built up of straightpipe-.sect-ions combined with nipples, Ls, and returns, and, as. ill-ustrated, suitablydisposed bolts 4.0 are ar,

sections. Two additional bolts 4l aredisposed one at each side of the furnace, connecting the Water-.columnsil with the section 7:, and thus acting to thoroughly brace the upper portion of the furnace.

Inpractice the fuel is placed directlyupon the fuel passing upwardly and in contact with the upwardly-.extending .continuations of the grate-bar, as also in contactwith the water-crown and the several parts ofthe was ter-front and water-back.

vIt will of course-be. understood that in practiceany suitable materials may be employed for the various, parts of the structure, any

suitable--proportions--may--beern-pleyed-forthea plurality of bars oppositely disposed in pai-rs, each of the bars consisting of a tube bent upon itself to form two sections lying 0ne above the other to conduct waterV in op.-

posite directions and in different horizontal planes. l

2. In a furnace,v a grate com pricing-a pluralityof bars oppositely disposed in pairs, each bar consisting of a pipe returned upon itself to conduct water in di-ierent directions.

3. A furnace comprising spaced Water-sections, a water-crown anda plurality of transverse .hollow grate-barsv eachv comprising a pipe-returned upon itself and connected at one end with its respective water-section the opposite ends of the bars being bent upwardly to form sides and connected with the crown.

4. Afurnacecomprising Water-sections and a water-crown, Vand pipes connected with the water sections, said pipes passing transversely of the furnace and bent upon themselves with the convolutions of each pipe lying in a common vertical plane, said pipes having their upperV ends connected with the wa= ter-crown.

5. Ina'furnace, the combination with a water-crown, of a plurality of series of pipes connected therewith and oppositely'disp'osed;

in pairs, the pipes of each series lying in a com-mon verticalplane, andthelower ends of the vpipes being continued inwardly and transversely of the `furnace to form a grate.

v6,. Afurnacecomprising mutually-.parallel Water-sections and a water-crown'disposed thereabov-e, ra series of pipes connected 'with the water-crown and with awaterisection, the

pipes ofl each seriesv lying in arcoinmon vertical `plane and` having their lower portions `bent `inwardly and .transversely of the furomitted, and thus the front of the furnace is not liable to fracture or other injury due to i nace. and returned upon themselves.

7'. A furnace comprising a `fire-box, a wa- 8. Arfur-nace comprising a fire-box, a plu- `rality of water-columns in the rear of the I fire-.bex and kseparated by `interspaces, plates 1 closing the inter-'spaces at the` innerredges of ther-columns, openings through the plates,and Y additional openings through the `plates vprovided with adj-ustableclosures.

the grate in the usual manner, the heatfrom 49. A furnace. `cornjgrrising a. water-front, a

i water-,back including columns separated by interspaces, plates closing theinterspace at theinneredgeszof'theicoluinns, mutually-.parj allel water-sections communicating with the water-.front and the ywater-back, a waterfcrow-ncomlnunicating with the water-.front andthe water-back, aseries ofpipesconnected with thewater-crown and with t'ne water-.sectionS.....t`he,pjpes@fmeachmsepies,..heingbentmat itheir lower ends to lie Ytransversely of the f-urnace and forni a, grate, and openings i through the plates and leading to the. interspacebetweenthecolum-ns of thewater-baek.

10. A furnace comprising a fire-box, a piurality ofrwater-columns gin therearof the/firebox and .separated yby interspaces, plates closing the interspaces at the inlneredges of the columns, a grate, openings through the plates-.below the grate', and additional open- ,lings through the plates above the grateand provided with adjustable closures.

11. Afurnace comprising aire-box, a plurality `of water-columns in the rear of the fire-.box and separated by interspacesplates r closing the intel-spaces, openings through the ter-back including aJ plurality of water-columns separated-by interspaces, plates closin g l thel inter-spaces at the inner edges ofthe .colulnns., .and openings communicating with-the interspaces and provided with'dampers.

ranged to brace the several connected Water- E .TOO

IIO

plates, and additional openings through the plates provided with adjustable closures.

12. A furnace comprising a tire-box, a water-back including columns separated by interspaces, plates closing the interspaces, a grate, openings through the plates below the grate, and additional openings through the plates above the grates and provided with adjustable closures.

13. A furnace comprising a fre-boX, a plurality of watercolumns in the rear of the box, a grate comprising transversely disposed l pipes, openings leading between the columns belowr the grate, and additional openings leading between the columns above the grate and provided with adjustable closures.

In testimony that we claim the foregoing as our own We have hereto aftixed our signatures in the presence of two witnesses.

JOSEPH C. WIGERT. I DAVID WIGERT;

ANDREW N. MATHENY, ELLswoRTH I-IITES. 

